Yes, not existent, it says "solved 2 times so far" but not showing "who" is the last solver.It looks like if the pool of 6x6 no-ops is exhausted. Sunday is not a good day for correcting problems ... , perhaps the solution is to provide 2 no-ops next Sunday?

This suggests a koan: what is the value of solving a nonexistent puzzle? Amazingly, the web site says 2 people have done that already and the answer to the koan is "8 points"!

It was in fact missing.

It's strange though, after generating and loading puzzles for the next month (which I do in the last week of the preceding month)I run a checking script that checks if all puzzles are present. All was ok then.

I ran it again just now, and 4 no-op puzzles were missing (?!) (today's, and the ones for the following three Sundays)

Today's puzzle should be there now.

Patrick

edit: the "solved 2 times so far" comes from the fact that a "puzzle id" number is set to zero if there is no puzzle.There are appear to be 2 records in the database for puzzles solved with id zero (one in 2010, one in 2012, most likelyset at the time because of some network/database error). I cleared those records now..